how to troubleshoot electric power steering (EPS) problems in Ford Explorer Fifth Generation (2011-2...

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

540 words

⚠️ Safety Warning

This issue requires immediate attention. If you are not experienced with automotive repairs, consult a professional mechanic. Working on critical systems can be dangerous.

Problem Statement

Learn how to troubleshoot and fix electric power steering issues in Ford Explorer (2011-2019). Step-by-step guide with diagnostic and repair instructions.

Affected Component

Steering

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems to prevent short circuits.

Symptoms

•Steering wheel feels heavy or difficult to turn
•Steering assist intermittently failing
•Warning light illuminated on the dashboard (EPS light)
•Unusual noises when turning the steering wheel
•Vehicle pulling to one side while driving

Diagnostic Steps

1
Scan the vehicle's onboard computer with an OBD-II scanner to check for any fault codes related to the EPS system.
2
Inspect the EPS fuse and relay for any signs of damage or failure.
3
Check the EPS wiring harness for any visible signs of wear, corrosion, or loose connections.
4
Verify the battery voltage and condition, ensuring it meets the required specifications (typically 12.6V or higher).
5
Test the EPS motor by checking for proper voltage and ground signals using a multimeter.
6
Inspect the steering column for any binding or physical obstructions that could affect steering.

Solution

💡 Expert Tip

For complex repairs like this, consider taking photos at each step. This helps if you need to reverse a step or consult with a mechanic. Also, keep all removed parts organized - you may need to reference them during reassembly.

Verification

After completing the repair, verify that the issue has been resolved:

✓Test the affected component to ensure it functions correctly
✓Check for any error codes or warning lights
✓Monitor the vehicle for a few days to ensure the issue does not recur

Prevention Tips

To prevent this issue from occurring again:

•Follow the manufacturer's recommended maintenance schedule
•Address warning signs early before they develop into major issues
•Use quality parts and fluids recommended for your vehicle
•Keep detailed records of all repairs and maintenance

Tools & Equipment Required

•OBD-II scanner
•Multimeter
•Socket set
•Torque wrench
•Screwdrivers

Parts Required

•EPS fuse (if blown)
•EPS relay (if defective)
•EPS motor (if faulty)

Related Faults

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Diagnostic Steps

1
Scan the vehicle's onboard computer with an OBD-II scanner to check for any fault codes related to the EPS system.
2
Inspect the EPS fuse and relay for any signs of damage or failure.
3
Check the EPS wiring harness for any visible signs of wear, corrosion, or loose connections.
4
Verify the battery voltage and condition, ensuring it meets the required specifications (typically 12.6V or higher).
5
Test the EPS motor by checking for proper voltage and ground signals using a multimeter.
6
Inspect the steering column for any binding or physical obstructions that could affect steering.

Solution

1. Preparation

Gather necessary tools and equipment.
Disconnect the battery to ensure safety while working on electrical components.

2. Inspect and Replace EPS Fuse/Relay

Locate the fuse box under the dashboard or in the engine compartment.
Remove the EPS fuse and check for continuity using a multimeter.
- If blown, replace it with a new fuse of the same amperage.
Check the EPS relay by removing it and testing for continuity. Replace if defective.

3. Repair or Replace Wiring

Examine the EPS wiring harness for signs of damage.
Repair any damaged wires using electrical tape or heat-shrink tubing.
If necessary, replace the entire wiring harness if extensive damage is found.

4. Test and Replace EPS Motor

With the battery reconnected, use a multimeter to check the voltage supply to the EPS motor when the steering wheel is turned.
- If no voltage is present, check the related circuits for faults.
If the motor is defective, follow the manufacturer’s guidelines to remove and replace the EPS motor.
- Disconnect the electrical connector and remove mounting bolts to remove the motor.

5. Reassemble and Secure

Reconnect any connectors and secure all components back in their original positions.
Ensure all bolts are tightened to the manufacturer's torque specifications.